With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cipSecTunHcInDecompOctets
Cisco IPSec Sec Tunnel Hc In Decomp Octets
1.3.6.1.4.1.9.9.171.1.3.2.1.30
A high capacity count of the total number of decompressed octets received by this IPsec Phase-2 Tunnel. This value is accumulated AFTER the packet is decompressed. If compression is not being used, this value will match the value of cipSecTunHcInOctets.
Back to CISCO-IPSEC-FLOW-MONITOR-MIB MIB page.
IPHost Network monitor allows you to monitor cipSecTunHcInDecompOctets on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.
